La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Changes in land use and climate: consequences for thermophile bird species over more than 150 years in three French regions (2015)
Auteurs :	Alex Clamens, Auteur
Type de document :	Article
Dans :	Alauda (83(3) 2015)
Article en page(s) :	219-234
Résumé :	Numerous studies show that the current global climatic change results in an expansion, or a lesser regression, of thermophilous species. These studies are limited in time over the last decades and they sometimes used global analyses. The publication, in the 1830s and 1850s, of ornithological syntheses in three regions of France gives the opportunity to investigate the effects of global warming on birds populations over one and a half century, in a country straddling two climatic zones with wide landscape diversity. The comparison of avifaunas over this period shows a regression of thermophiles species in the non mediterranean region, and an extension of northern species in the two Mediterranean regions. This dynamics contradicts the expected trends based on the current evolution of climate. This result reflects the progress of the forested areas in France as a result of the decrease of agricultural and pastoral activities, because Mediterranean birds are species of open habitats, and because most European forest birds have a north- em distribution. On the scale of a century, the effects of landscapes change on the avifauna override the effects of climate warming.

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